LITTLEFIELD, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(024995) LITTLEFIELD
From Year=1951 To Year=1995
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 157 229 442 718 1002 1207 1512 1459 1212 844 363 164 9308
40 S 157 386 828 1545 2547 3754 5266 6725 7937 8781 9144 9308 9308
45 M 61 122 297 568 847 1057 1357 1304 1062 689 228 60 7652
45 S 61 183 480 1048 1895 2951 4309 5613 6675 7364 7592 7652 7652
50 M 14 45 176 419 692 907 1202 1149 912 534 112 9 6171
50 S 14 59 235 654 1345 2252 3454 4603 5516 6050 6162 6171 6171
55 M 1 7 84 277 537 757 1047 994 762 380 37 0 4883
55 S 1 7 92 369 905 1662 2709 3703 4465 4846 4882 4883 4883
60 M 0 0 29 155 387 607 892 839 612 238 6 0 3767
60 S 0 0 29 184 572 1178 2071 2909 3522 3760 3767 3767 3767
Corn Growing Degree Days
50 M 142 202 306 453 621 698 875 867 706 530 270 140 5810
50 S 142 344 650 1103 1723 2421 3296 4163 4870 5400 5669 5810 5810
M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu